Amid national protests over police brutality, debates over law enforcement in schools have been reignited. Though research has focused on the consequences of police presence in schools, few studies have investigated the roles of school police officers (SPOs) and whether the larger contexts influence them. Using a bioecological framework (Bronfenbrenner and Morris, 2006), we examined how historical, social and developmental contexts shape SPOs' views of their roles and the challenges and opportunities they encounter. Nineteen 90-min focus groups with 45 SPOs from one large school police department were conducted. Analysis revealed that SPOs perceived their roles as multifaceted, encompassing both formal (e.g., law enforcer, educator) and informal (e.g., confidante, counselor) roles. These roles were enacted differently depending on the school level and neighborhood context. Furthermore, the challenges and opportunities SPOs reported were also contextualized emerging from changes in school policies, the rise in technology and social media and increased professionalization of their police department. Implications for theory and research as well as for training and policy are discussed.The way in which people learn and institutions teach is changing due to the ever-increasing impact of technology. People access the Internet anywhere, anytime and request online training. This has brought about the creation of numerous online learning platforms which offer comprehensive and effective educational solutions which are 100% online. These platforms benefit from intelligent tutoring systems that help and guide students through the learning process, emulating the behavior of a human tutor. However, these systems give the student little freedom to experiment with the knowledge of the subject, that is, they do not allow him/her to propose and carry out tasks on his/her own initiative. They are very restricted systems in term of what the student can do, as the tasks are defined in advance. An intelligent tutoring system is proposed in this paper to encourage students to learn through experimentation, proposing tasks on their own initiative, which involves putting into use all the skills, abilities tools and knowledge needed to successfully solve them. This system has been designed developed and applied for learning predictive parsing techniques and has been used by Computer Science students during four academic courses to evaluate its suitability for improving the student's learning process.The term "Postponed Fractures" (PF) appears to be more logical when one talks about neglected fractures. The "Fixation in situ" (FIS) approach with Ilizarov is a novel concept to treat such case. A 35-year male with comminuted subtrochanteric fracture with a big butterfly fragment (left femur) reported after 3 weeks of injury. He was ready for surgery at 6 weeks of injury with 5 cm shortening and external rotation deformity. Apprehending that Open surgery at that time would invite extensive soft tissue dissection resulting in infection, "Fixation in situ" approach was contemplated. A Hybrid Ilizarov Femoral frame was mounted without disturbing the fracture. Corticotomy through distal metaphysis was done to correct rotation and shortening. Accordion manoeuvre (AM) was also applied. The apparatus was removed at 6 months. He regained length, rotation and full function.The ornamental aquarium pet trade is a leading pathway for the introduction of aquatic invasive species. https://www.selleckchem.com/products/A-966492.html In addition to purchasing live organisms in stores, hobbyists are engaging more with alternative informal online marketplaces that enable peer-to-peer selling of aquarium organisms via auctions. Although growing in popularity, little is known regarding the global extent of informal marketplaces, including the taxonomy of species that are traded, their economic value, and the geographic routes by which live organisms are transported. In this study we use an automated web crawler to collect data on completed auctions between 2011 and 2017 from the largest informal market for aquarium hobbyists, AquaBid, to understand the market dynamics and trade flows of the informal retail market online. During the 7-year study period, the AquaBid website facilitated the estimated trade of 539,548 live freshwater animals, 579,700 fish eggs, and 31,431 plant assortments/bunches among 24,409 unique users who collectively placed 444,132 bids on 192,227 auctions, representing a total sale value of $6,015,030 USD. Source (seller) and recipient (buyer) locations of live organisms were distributed across 39 countries but concentrated largely in major cities of the United States and select European and southeast Asian countries. Our study is among the first to quantify geographic routes of live organism transport between specific locations on the landscape and demonstrates the highly diffuse and non-centralized nature of the informal aquarium trade. Evaluating the emerging challenges represented by informal online retail marketplaces is critical to create policy and regulatory solutions that minimize the transport of prohibited invasive species.In this paper, the electronic properties of a carbon allotrope, graphene with a kagome lattice structure, are investigated. Spin-polarized density functional theory (DFT) calculations with Grimme dispersion corrections were done. Bond lengths, electronic band structure, and projected density of states were calculated. Electronic band structure calculations show kagome flat-band formation with higher d-orbital contributed bonding behavior than the pristine graphene structure. The structural parameters and electronic band results of this 2D carbon allotrope show wider possible usage in many applications from desalination membranes to possible high-temperature superconductors.Activation of nociceptor sensory neurons by noxious stimuli both triggers pain and increases capillary permeability and blood flow to produce neurogenic inflammation1,2, but whether nociceptors also interact with the immune system remains poorly understood. Here we report a neurotechnology for selective epineural optogenetic neuromodulation of nociceptors and demonstrate that nociceptor activation drives both protective pain behavior and inflammation. The wireless optoelectronic system consists of sub-millimeter-scale light-emitting diodes embedded in a soft, circumneural sciatic nerve implant, powered and driven by a miniaturized head-mounted control unit. Photostimulation of axons in freely moving mice that express channelrhodopsin only in nociceptors resulted in behaviors characteristic of pain, reflecting orthodromic input to the spinal cord. It also led to immune reactions in the skin in the absence of inflammation and potentiation of established inflammation, a consequence of the antidromic activation of nociceptor peripheral terminals.